gprof - question reg. pruning output display

[rakesh_usenet]

Hi,
I am using 'gprof' to profile my C++ program. I am examining the
call-graph sequence of the program alone and this is how my code looks.




$ gprof -b -q --function-ordering  -J myprog  > profile.out

$ cat profile.out

[1]     92.9    0.00    0.07                 main [1]
0.00    0.06       1/1           LongFunc [4]
0.00    0.00       1/1           Func2 [38]
0.00    0.00       1/1           Func3 [173]
0.00    0.00       1/1           Func4 [180]
0.00    0.00       1/1           Func5 [193]
0.00    0.00       1/1           Func6 [181]
0.00    0.00       1/1           Func7 [168]
-----------------------------------------------
0.00    0.06       1/1           LongFunc [3]


It prints all the functions of the call-graph, but I am primarily
concerned and prints a summary at the end ( with the 'critical'
function listed). I would like to prune the result such that *only* the
critical function get listed.
That is, in this case I want something as follows.

[1]     92.9    0.00    0.07                 main [1]
0.00    0.06       1/1           LongFunc [4]
-----------------------------------------------
0.00    0.06       1/1           LongFunc [3]


What is the appropriate gprof option for this.
I use GNU gprof 2.14.90.0.7 . 

Thanks for the help in this regard.